Fix of the rev.txt generation target

Author: AlexUstinov

Directory.Build.props

@@ -75,9 +75,13 @@
       <Pack>true</Pack>
     </None>
   </ItemGroup>
-  <Target Name="ExportRev" Condition="Exists('.git\index') AND '$(Configuration)' == 'Release'">
-    <MakeDir Directories="_Build" />
-    <Exec Command="git rev-parse HEAD > rev.txt" WorkingDirectory="_Build" />
+  <Target Name="ExportRev"
+          BeforeTargets="Pack"
+          Condition="'$(Configuration)' == 'Release' AND Exists('$(SolutionDir).git\index')"
+          Inputs="$(SolutionDir).git\index"
+          Outputs="$(DoRevFile)">
+    <MakeDir Directories="$(SolutionDir)_Build" />
+    <Exec Command="git rev-parse HEAD > rev.txt" WorkingDirectory="$(SolutionDir)_Build" />
   </Target>
 
   <Import Condition="Exists('User.Directory.Build.props')" Project="User.Directory.Build.props" />

MSBuild/DataObjects.Net.InternalBuild.targets

@@ -5,6 +5,6 @@
   <XtensiveOrmPath>$(SolutionDir)_Build\$(Configuration)\</XtensiveOrmPath>
 </PropertyGroup>
 
-<Import Project="$(MSBuildThisFileDirectory)\DataObjects.Net.targets" />
+<Import Project="$(MSBuildThisFileDirectory)DataObjects.Net.targets" />
 
 </Project>

MSBuild/DataObjects.Net.targets

@@ -11,7 +11,7 @@
 <PropertyGroup>
   <CompileDependsOn>$(CompileDependsOn);XtensiveOrmBuild</CompileDependsOn>
   <XtensiveOrmPath Condition="'$(XtensiveOrmPath)'==''">$(MSBuildThisFileDirectory)</XtensiveOrmPath>
-  <XtensiveOrmPath Condition="!HasTrailingSlash('$(XtensiveOrmPath)')">$(XtensiveOrmPath)\</XtensiveOrmPath>
+  <XtensiveOrmPath Condition="!HasTrailingSlash('$(XtensiveOrmPath)')">$(XtensiveOrmPath)</XtensiveOrmPath>
   <XtensiveOrmWeaver Condition="'$(XtensiveOrmWeaver)'==''">$(XtensiveOrmPath)tools\weaver\Xtensive.Orm.Weaver.dll</XtensiveOrmWeaver>
   <XtensiveOrmBuildDependsOn>$(XtensiveOrmBuildDependsOn)</XtensiveOrmBuildDependsOn>
 </PropertyGroup>